I am a postdoc working in algebraic geometry in the group of Jungkai Alfred Chen at National Taiwan University. Before I was a PhD student of Stefan Kebekus at the University of Freiburg. Here is my CV.
My research interests are birational geometry and derived categories of algebraic varieties.
Publications and preprints:
- Extension of adapted differentials on klt orbifolds. Preprint: arXiv:2411.17268. (Submitted.)
- The Albanese morphism for hyperelliptic varieties, with Pieter Belmans and Andreas Demleitner. Indagationes Mathematicae, (2025). DOI:10.1016/j.indag.2025.10.004. Preprint: arXiv:2411.14814.
- Adapted differentials as a qfh-sheaf. Mathematische Zeitschrift 304, 68 (2023). DOI:10.1007/s00209-023-03330-6. Preprint: arXiv:2210.07968.
- A note on semiorthogonal decompositions for Fano fibrations. Geometriae Dedicata 216, 20 (2022). DOI:10.1007/s10711-022-00680-z. Preprint: arXiv:2002.10987.
Research interests
Birational classification of algebraic varieties and derived categories of algebraic varieties. More specifically:
- Campana's birational classification program and differential forms therein. (See this talk for more details.)
- Semiorthogonal decomopositions and their relation to the minimal model program. (See this talk for more details.)
Publications and preprints
- Extension of adapted differentials on klt orbifolds. Preprint: arXiv:2411.17268. (Submitted.)
- The Albanese morphism for hyperelliptic varieties, with Pieter Belmans and Andreas Demleitner. Indagationes Mathematicae, (2025). DOI:10.1016/j.indag.2025.10.004. Preprint: arXiv:2411.14814.
- Adapted differentials as a qfh-sheaf. Mathematische Zeitschrift 304, 68 (2023). DOI:10.1007/s00209-023-03330-6. Preprint: arXiv:2210.07968.
- A note on semiorthogonal decompositions for Fano fibrations. Geometriae Dedicata 216, 20 (2022). DOI:10.1007/s10711-022-00680-z. Preprint: arXiv:2002.10987.
PhD, master's and bachelor's theses
- Categorical aspects of Campana orbifolds, PhD thesis written under the supervision of Stefan Kebekus at the University of Freiburg (2023).
- Derived categories of Fano fibrations, master's thesis written under the supervision of Luca Tasin and Pieter Belmans at the University of Bonn (2019).
- Blow-ups in algebraic geometry, bachelor's thesis written under the supervision of Nikita Semenov at the Ludwig-Maximilians-University of Munich (2017).
Scripts for seminar talks
- Differential Galois correspondence, script for a seminar on differential Galois theory organized by Annette Huber-Klavitter at the University of Freiburg (SS 22).
- Sites and Topologies, script for a seminar on Topos Theory and Logic organized by Luca Terenzi at the University of Freiburg (WS 21/22).
- Thom Isomorphism theorem, script for a seminar on K-theory organized by Luca Terenzi at the University of Freiburg (SS 21).
- Hilbert Schemes of points on surfaces, script for a seminar on Heisenberg algebras and Hilbert schemes of points on surfaces organized by Mara Ungureanu at the University of Freiburg (SS 21).
- Zariski Cancellation, script for a seminar on insightful examples organized by Oliver Braunling at the Uniersity of Freiburg (WS 20/21).
- Hitchin–Kobayashi correspondence, script for a seminar on Higgs bundles organized by Andriy Haydys at the University of Freiburg (SS 20).
- Condensed Abelian Groups, script for a seminar on condensed mathematics organized by Johan Commelin at the University of Freiburg (WS 19/20).
- Projective bundle formula, script for a seminar on characteristic classes of topological vector bundles organized by Fabian Hebestreit at the University of Bonn (WS 18/19).
- Riemann–Roch theorem for surfaces, script for a seminar on the classifcation of algebraic surfaces organized by Luca Tasin at the University of Bonn (SS 18).
Other notes
- Enumerative Geometry, notes for a seminar that I organized at the University of Freiburg (WS 20/21). (Here is the program.)
Thanks to Julia Schneider for giving me this idea, and thanks to Claude for helping me implement it.
Here is my teaching statement.
Previous teaching
- Lecturer for Calculus 3 and 4 Class 10 (Calculus for Economics) during the Summer Term 2025 at National Taiwan University.
- Lecturer for Calculus 1 and 2 Class 10 (Calculus for Economics) during the Winter Term 2024/2025 at National Taiwan University.
- Teaching assistant for Elementary Geometry during the Summer Term 2023 at the University of Freiburg.
- Teaching assistant for Riemann Surfaces during the Winter Term 2022/2023 at the University of Freiburg.
- Teaching assistant for Elementary Geometry during the Summer Term 2022 at the University of Freiburg.
- Teaching assistant for Algebra and Number Theory during the Winter Term 2021/2022 at the University of Freiburg.
- Tutor for Introduction to Algebra during the Winter Term 2018/219 at the University of Bonn.
- Tutor for Linear Algebra for Informatics and Teachers during the Summer Term 2018 at the University of Bonn.
Email:
pnunez [at] ntu.edu.twAddress:
National Taiwan University Department of Mathematics No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, TaiwanOffice:
Astronomy - Mathematics Building, Room 547Other academic activities
- My colleague Flora Poon and I organized the conference Tour de Formosa from January 12 to January 16 2026.
LaTeX templates
- My basic LaTeX templates. They are a bit minimalistic, and they include a script to quickly create new LaTeX documents with corresponding (private) GitHub repository from a Linux terminal.
- Pieter Belman's GitHub LaTeX template. It comes with a very nice GitHub workflow, which allows you to compile the PDF file directly on GitHub. So you can even edit and compile your TeX files comfortably on your phone.